<!DOCTYPE html>
<html class=reftest-wait style="background: lightblue;">
<title>When the root element has scrollbars, these should be excluded in new snapshot</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
<link rel="author" href="mailto:khushalsagar@chromium.org">
<link rel="match" href="root-scrollbar-with-fixed-background-ref.html">
<meta name="fuzzy" content="maxDifference=0-2; totalPixels=0-4500">

<script src="/common/rendering-utils.js"></script>
<script src="/common/reftest-wait.js"></script>

<style>
#hide {
  position: absolute;
  top: 0px;
  left: 0px;
  width: 10px;
  height: 10px;
  background: red;
  contain: paint;
  view-transition-name: hide;
}
#first {
  width: 10px;
  background: linear-gradient(green, blue);
  height: 1000px;
}
body {
  margin: 0px;
  padding: 0px;
}

/* Set a no-op animation to screenshot the pseudo transition DOM. */
html::view-transition-group(hide) {
  animation-duration: 300s;
  opacity: 0;
}
html::view-transition-new(*) {
  animation: unset;
  filter: invert(1);
  height: 100%;
}
html::view-transition-old(*) {
  animation: unset;
  opacity: 0;
  height: 100%;
}
</style>

<div id=hide></div>
<div id=first></div>

<script>
failIfNot(document.startViewTransition, "Missing document.startViewTransition");

async function runTest() {
  await waitForAtLeastOneFrame();

  await new Promise((resolve) => {
    addEventListener("scroll", () => {
      requestAnimationFrame(() => requestAnimationFrame(resolve));
    }, { once: true, capture: true });

    document.documentElement.scrollTop = 500;
  });
  document.startViewTransition(() => {
    requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
  });
}

onload = () => requestAnimationFrame(runTest);
</script>

</html>
